Arc-lamp apparatus



Marci? 26, 1929 GQQDRIQH 1,?07,0(M

ARC LAMP APPARATUS Filed Aug. .1, 1927 FSheets-Sheet 1 INVENTOR A/oms E. 600ar/c/2.

March 2 6, 1929; NLEGOODMCH 1 707,

ARC LAMB APPARATUS Filed Aug. 1, 1927 2 sheets-sheet I IN VEN TOR MIT/J E. 60047105,

1 s A 6-W E P A 1 TORNE Y8 i'hbly that shown in my concurrent appliv Patented M... 26, 1929.

UNITED STATES 1,707,004. PATENT-OFFICE.

NORRIS E; 'GQODBICH, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO SANITARIUM AND HOSPITAL EQUIPMENT CQ, OF BATTLE CREEK, MICHIGAN.

ABC-LAMP APPARATUS.

Application filed August 1, 1927. Seriallo. 209,891.

character which has comparatively few parts and these of simple durable form and convenient arrangement.

Third, to provide an improved arc lamp 1o apparatus in which a plurality of lamps are connected in series and provided wlth feeding means common to all of them.

Objects pertaining to details and economies of my invention will appear from the description to follow. The invention is defined m the claims.

invention is clearly i ustrated in the accompanying drawing; in which Fig. 1 is afragmentary vlew partially in section on a line corresponding to line 1-1 of Figs. 2, 3 and 4 of a therapeutic lamp apparatus embodying the features of my 1nvention.

Fig. 2 is a detail view partially in vertlcal section on a line corresponding to line 22 of Figs. 1. and 4. V Fig. 3 is a fragmentary view partially in horizontal and 2. r

Fig. 4 is a detail view partially 1n section showing details of the car feed means.

screen and its supporting means.

Fig. 6 is a detail vertical section through one of the supporting arms.

Fi 7 is a horizontal section on line 77 of Fig. 2 showing further details of the sup- 4 porting means. k V

Fig. 8 is a diagrammatic vlewlllustratmg the series connections for the lamps and their control or feed means.

Referring to the drawing, 1, 1 are the sup rting standards of the frame which is prefcation on therapeutic light apparatus. The reflector 2 is elongated andof curved cro$ section, its supporting. arms 3 bemg adjustably mounted on the standards 1. The I standards have adjustable uprights 4.

I provide a plurality of lamps, .two being illustrated in the accompanying drawing, their bottom electrode holders 5 being supported by the rods 6 and17 depending within the links 21 to the feed clutches 16. This A structure embodlyling the features of mydoted lines in Fig. 2 and carried by the section on line 3-3 of Figs. 1

on supporting and the reflector. The bottom electrode or car- Icon 8 isadjustably supported in the holder by means of the set screw 9.

The holder 10 for the top carbon 11 is carried by a feed or clutch rod 12 mounted for vertical adjustment through the plate \13. An insulating block 15 is arrangedon this plate and supports the clutch 16. u

A pair of supportin posts 14 are disposed to project upwardly rom the housing and 4 have cross pieces 17 connected by the longitudinal bar 18. Therods 6 and 7 are insulated from the bottom plates 13, see Fig. 4.

v On the, cross pieces 17 I mount a rockshaft 19 having arms 20 which are connected by rockshaft also carries arms 22 and 23, the arms 23 being connected to the dashpot cylinder 24, the plunger 25 of which islindicated by rod 26. 1

The arm 22 is connected to the armature 27 of the series coil or solenoid 28. Thus arranged the clutches 16 are actuated in unison from a single solenoid.

In Fig. 3 29 represents the circuit cable,

'one of the circuit wires being connected to a post 30 and the coil connection being indicat ed at 31. From the coil topost 32 a connection is-made having therein a resistance element 33. The post 32 is connected by the-con"- nection 34 to the post 35 on. the clutch rod Y g 712 of one of the lamps. Fig. 5 is a fragmentary view of electrode The. holder supporting rod 7 of the first lamp of the series is connected by the wire 36 and the flexible connection 37 to the feed rod of the'second lamp, while the supporting rod 7 of the second lamp, which has an extension 7 at its upper end, is connected by the ad? justable resistance coil .38 to thesecond' circuit wire as indicated in Fig. 3. The result of this connection is that I am able to dispense with shunt solenoids, the carbons are uniformly fed and one lamp of the series does not rob another.

The-operating parts are; mainly within the housing 39 mounted. on the reflector. This housing comprises a body portion which is p the screws 41. Whenthese screws 41 are re moved the top/1Q may be removed to afford access'to the mechanism within the housing.

I provide screens for the carbons consisting of bottom plates 42 having central holes 110 i 43 therein to receive the bottom electrode. A

top band 44 is provided, the bottom plate and the band being connected by the side pieces 45 which are extended into spring arms 46 above the band 44. These spring arms have inwardly projecting fingers 47 engageable with the adjustable collars 48 on the carbon holder supporting rods 6 and 7 Spring clips 49 are carried bythe spring arms46 to engage these rods.

The screen 50 is mounted between the bottom 42 and the band 44. The "carbons are thus enclosed so that the sparks and dbris fall within the screen.

I have illustrated and described my improvements as I have embodied the same in therapeutic lamps. I have not attempted to illustrate or describe variousmodifications and adaptations which I contemplate as I believe these disclosures will enable those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention what I claim as new and desire to secure by Letters Iatentis:

1. The combination ofan elongated'cyliin drically curved reflector mounted for tilting adjustment on an axis adjacent one edge thereof, a plurality of lamps each comprising a pair of bottom carbon supporting rods suspended within said reflector and provided with a lower carbon holder, top carbon holders provided with feed clutch rods disposed through said reflector, feed clutches coacting with said clutch rods onthe outside of said reflector, a rockshaft provided with arms,

links connecting said arms to said feed clutches, a dashpot operatively connected to said rockshaft, a series coil armature opera tively connected to said rockshaft, a series coil cooperating with said armature, series connections for said lamps including a resistance coil inter osed between the said series coil and the rst lamp' of the series, an adjustable resistance coil in the circuit connection for the last lamp of the series, and a housing for th parts mounted on the outside of said reflector. p

2. The combination of a reflector, a plurality of lamps each comprising a pair of bottom carbon supporting rods suspended within said reflector and provided with a lower carbon holder, top carbon holders provided With- -feed clutch rods disposed through said reflector, feed clutches coacting with said clutch rods on the outside'of said reflector, a rockshaft provided with arms, links connecting said arms to said feed clutches, a das'hpot operativ'ely connected to said rockshaft, a series coil armature operatively connected to said rockshaft, a series coil cooperating with said armature, series connections for said lamps includin 'a resistance coil interposed between the sai series coil and the first lamp of the, series, and an. adjustable resistance coil in the circuit connection for the last lamp of the series.

3. The combination of an elongated cylindrically curved reflector mounted for tilting adjustment on an axis adjacent one edge thereof, a plurality of lamps each comprising a pair of bottom carbon supporting rods sus pended within said reflector and provided with a lower carbon holder, to'p carbon holders provided with feed clutch rods disposed through said reflector, feed clutches coacting with said clutch rods on the outside of said reflector, a rockshaft provided with arms, links connecting said arms to said feed clutches, and a solenoid operatively connected to said r'ockshaft, said lamps being connected in series.

4. The combination of a reflector, a plurality of lamps each comprising a pair of bottom carbon supporting ro'ds suspended within said reflector and provided with a lower carbon holder, top carbon holders provided with feed clutch rods disposed through said reflector, feed clutches coacting with said clutch rods on the outside of said reflector, a rockshaftprovided with arms, links connecting said arms to said feed clutches, and a solenoid operatively connected to said rockshaft, said lamps being connected in series. v

5. The combination of an elongated cylindrically curved reflector mounted for tilting adjustment about an axis adjacent one edge thereof, a plurality of arc lamps mounted on said reflector with their bottom carbons supported within the reflector, top carbon holders provided with feed means comprising feed clutches, a rockshaft operatively connected to said feed clutches, a dashpot operatively connected to said rockshaft, aseries coil armature operatively connected to said rockshaft, a series coil cooperating with said armature, said lamps and series coil being con nected in series with a resistance coil interposed between'the series coil and one of the lamps, and a second resistance coil interposed in the circuit connection for the other lamp.

6. The combination of a plurality of arc lamps, top carbon holders provided with feed means comprising feed clutches, a rockshaft operatively connected to said feed clutches, a dashpot operativelyconnected to said rockshaft, a series coil armature operatively connected to said rockshaft, a series coil cooperating with said armature, said lamps and series coil being connected in series with a re sistance' coil interposed between the series coiland one of the lamps, and a second re sistance' coil interposed in the circuit connection for the other lamp.

7 The combination of an elongated cylindrically curved reflector mounted for tilting adjustment about an axis adjacent one edge thereof. a plurality of arc lamps mounted on' said reflector withtheir bottom carbons supmozooe ported within the reflector, said lamps being connected in series, top carbon holders provided with feed means comprising feed clutches, a rockshaft operatively connected to said feed clutches, a dashpot operatively connected to said rockshaft, and a solenoid operatively connected to said rockshaft.

8. In a lamp structure of the class described, the combination of a reflector, a pluralit-y of lampseach comprising bottom carbon holders suspended within said reflector, top carbon holders disposed through said reflector and provided with feed means com- I prising clutch arranged on the outside of said reflector feed rods and coacting clutches, a rockshaft operatively connected to said clutches, a dashpot operatively connected to said rockshaft, a solenoid operatively associated with said rockshaft, said lamps being connected in series, said rockshaft, dashpot and solenoid being mounted on the out side of said reflector, and a housing :Eorv said parts mounted on said reflector.

In witness whereof I have hereunto setmy hand.

NORRIS E. GOODRIOH. 

